Public local MCP bundle

Stoa Validator MCP Server

A local stdio MCP server for validating MCP listing readiness and x402 payment evidence before builders list, charge, or ask buyer agents to spend.

Request a Launch Gate review Read package README Inspect package.json

What the server checks

validate_mcp_listing

Checks whether a public MCP, x402, paid API, or agent-tool listing is ready for free/reversible directory submission without overclaiming demand, ranking, production readiness, or revenue.

check_x402_payment_evidence

Classifies x402 paid-call evidence as external-payment-ready, mechanics-only, or repair-before-claim.

Run locally

Use this bundle as a public inspection artifact. Applied review and repair work is scoped through Stoa Launch Gate before any payment path is sent.

node stoa-validator-mcp-server.mjs
{
  "mcpServers": {
    "stoa-validator": {
      "command": "node",
      "args": ["stoa-validator-mcp-server.mjs"]
    }
  }
}

Package facts

Name stoa-validator-mcp-server
MCP name io.github.x402-stoa/stoa-validator-mcp-server
Repository github.com/x402-stoa/mcp-launch-review/tree/main/stoa-validator-mcp-server
Samples listing validator sample · self-pay evidence guard sample

Boundaries